Cutting-machine.



O. W. TRUMBULL.

CUTTING MACHINE.

APPLICATION FILED JULY 30, 1910.

Patented Au 8,1911

2 SHEETS-SHEET 1.

. GEWENTOR M WITNESSES:

. 8v I .ATTORNEYS COLUMBIA PLANOGRAPH CO. WASHINGTON. D. C

0. W. TRUMBULL. CUTTING MAUHINE.

APPLICATION rum) JULY 30, 1910.

Patented Aug. 8, 1911.

2 SHEETS-SHEET 2.

WITNESSES:

ATTORNEYS unrn s'rnrs nrni n'r are.

OSCAR W. TRUMBULL, OF PALMYRA, NEW YORK.

CUT TING-MACHIN E.

Specification of Letters Patent.

Patented Aug. 8, 1911.

Application filed July 30, 1910. Serial No. 574,651.

To all whom it may concern:

Be it known that I, OSCAR IV. TRUMBULL, of Palmyra, in the county oflVayne and State of New York, have invented a certain new and usefulCutting-Machine, of which the following is a specification.

The object of my invention is to provide a cutting machine which isparticularly adapted for slitting, trimming or cutting material having acompressible or yielding character, in the nature of rubber or packingmaterial composed of rubber, or caoutchouc, and a fabric, leather, etc.

In the manufacture of packing rings and the like of rubber orcaoutchouc, or the latter substances combined with canvas or similarfabric, the material is turned out in the form of long fiat blanks ofsubstantial width, which are placed in a planing or cutting machine anda plurality of comparatively narrow strips cut therefrom.

Ordinarily the two outside strips, resulting from this cutting of eachblank, are not available for use because of the unevenness of theiroutside faces or lengthwise edges. The machine devised by me isparticularly adapted for trimming these uneven edges and thus renderingthe outside strips available for use. In this work the trimmed face ofthe strip preferably extends in a perpendicular plane, or the faceformed by the cutting operation is disposed at right angles to the topand bottom faces of the strip, but the machine is adapt-ed to cut thematerial in a plane at an angle to said top and bottom faces and therebyprovide the trimmed strip with a more or less inclined, or beveled,edge.

The machine is also adapted for slitting or cutting a strip of anycross-sectional shape into two parts with the direction of the cutextending in a vertical plane or at more or less of an angle thereto.

The various novel features which consti tute my invention I haveparticularly pointed out in the claims appended hereto and havedescribed the same in detail in the following specification, which forconvenience in understanding is to be taken in connection with theaccompanying drawing in which Figure 1, is a front end elevation of themachine. Fig. 2, is a side elevation thereof. Fig. 3, a plan view. Fig.4, a rear elevation, and Fig. 5, a detail view.

This machine includes, generally, a frame provided with a guide-Way ordie through which is passed the material to be cut, a knife extendingcrosswise of the guide-way or die in one direction between the planes ofthe opposite sides of the guideway or die, and a carrier for the knifeadjustable in a rectilinear direction crosswise of the direction of theknife for moving the knife relatively to the planes of said oppositesides of the guide-way or die, and in a curvilinear direction about anaxis extending between such planes and parallel thereto and locatedoutside of the guide-way or die. In the illustrated embodiment of myinvention the knife is arranged in close juxtaposition to the exit endof the guideway or die.

The frame of the machine preferably includes a flat base a, parallelsides or standards b, 0, having projections (Z, carrying a cross bar f,having marginal portions extending beyond the upper and lower edges ofthe projections (Z, and provided at its opposite ends with forwardlyextending ears or lugs g, in which is rotatably mounted a suitable feedscrew it, provided at one end with a hand wheel 2'. or die is preferablyformed by the inner face of the side 6, the lower face of a fixed crossbar 7', extending between the sides 7), 0, the

upper face of the bar 70, adjustably mounted.

between said sides, and a movable plate or wall m, located between theopposing faces of the bars 7', 7c, and designed to be forced toward theside '6. by a suitable spring. The bar 70, is preferably held inposition by bolts 02, movable in vertical slots 72- arranged in thesides 6, 0, respectively.

In the illustrated embodiment of my invention the plate or shoe m, isforced toward the side I), by means of a flat spring 79, which at itsfront end engages said plate or shoe, at its rear end is adjustablymounted as will be hereafter described, and at its intermediate portionis engaged by a plate 1 which is adjustably mounted for the purpose ofvarying the tension of the spring. As illustrated herein the rear end ofthe spring 79, is held by a pin t, mounted in one of a plurality ofopenings in a bar 8, extending rearwardly from the frame. A plurality ofopenings are provided so that the pin 25, may be shifted for varying thepointof support for the rear end of the spring 79. This arrangement withthe adjustable plate 7, provides a desirable means for varying thetension of the spring and adjusting its relation to the shoe or plate m.This shoe or plate is provided with lugs 20, which coact with the rearedges of the plates j, is, for preventing the shoe from being drawn outfrom between these plates as the material under treatment is drawnthrough the guide-way.

The cutter is designated a, and consists of a. shank substantiallyrectangular in cross section, having the lower portion of one of itsedges suitably beveled to provide a cutting surface or knife edge. Thecarrier for this knife preferably comprises a rear head 11:, slidablymounted on the bar f, and having a threaded engagement with the screw h,and a front head 00, rotatably mounted on the rear head and providedwith a dia metrically extending channel :0 opening into the same fromits rear face and designed to receive a channel bar m which cooperateswith the shank of the knife for holding the same. in position as will behereinafter described. In the illustrated embodiment of my invention thehead 00, is in the form of a circular disk provided with an axiallydisposed rearwardly extending shaft or trunnion 00 which is journaled ina transverse opening of the head w. The head as, is also provided withtwo arcuate slots 41:, for the reception of the shanks of suitable boltsat, which are provided for firmly clamping the head in any of itsadjusted positions. The shank of the knife 2, is located in the channelof the plate 00 and as this shank is of greater width than the depth ofsaid channel the rear edge of the shank will be forced against the frontface of the head w, when? pressure is applied to the front face of thechannel plate for clamping the latter and the knife in position. Asshown in the accompanying drawings such pressure is applied by means ofa bolt 2 threaded in the head w, the end of the bolt finding a bearingagainst the outer face of the channel plate. This arrangement of theknife serves to hold the cutting edge of the same in very closeproximity to the exit end of the guideway or die.

In! the operation of the machine for trimming one of the outside facesof a strip of packing material, the bar 70, and shoe or plate m, arefirst adjusted in relation to the width and thickness of the material tobe treated. The strip is then inserted into the rear end of theguide-way and forced through the latter with the trimmed or even edge ofthe strip in cont-act with the inner face of the side 5, and the unevenedge of the strip in contact with the shoe or plate m. The front end ofthis strip, preliminary to the introduction of the same into theguideway, is slitted for a short distance so that it may pass the knife11, and provide a part the material to be trimmed and by means of therotatable head 00, the knife is disposed in a vertical plane or at anangle to the same so as to provide the cut or trimmed face of the stripwith a perpendicular or more or less beveled surface.

As hereinbefore outlined, the machine may be used for dividing into twoparts a strip rectangular in cross-section by cutting the strip along adiagonal line, or line eX tending substantially from corner to corner ofthe strip so as to divide a rectangular strip into two strips, each ofwhich will be, in cross-section, substantially the shape of a rightangle triangle. This would require the knife being positioned at anangle to the vertical plane, which position is readily attained byproperly adjusting the carrier as before described.

For cut-ting or slitting a piece of material having a cross-sectionalshape other than rectangular, a suitable supplemental die is preferablyprovided. having a bore or guideway of the cross-sectional shape of thestrip to be cut and this supplemental. die is placed in the describedguide-way of the machine and the material to be cut drawn through thesame.

\Vhen the machine is employed for trimming the edge of the strip ofmaterial the knife 9;, is preferably ground as shown in Fig. of thedrawings, so that the cut-ting edge of the blade portion 02 will be in aplane of one face of the shank.

When the machine is used for slitting or splitting a strip of material,I preferably use a cutter in. which the blade is provided withoppositely beveled faces, the cutting edge being in a plane intersectingthe middle of the edge face of the shank.

What I claim is 1. In a machine of the class described substantially asand for the purpose described.

2. In a machine of the class described and in combination, a frameprovided with a guide-way or die, a cutter extending crosswise of theguide-way in one direction, and a carrier for the cutter, the carrierbeing adjustable in a rectilinear direction at an angle to the directionof the cutter for positioning the cutter relatively to opposite sides ofthe guideway or die, the carrier being also adjustable in a curvilineardirection about an axis located outside of, and extending substantiallyparallel to, the guide-way or die, substantially as and for the purposespecified.

3. In a machine of the class described and in combination, a frameprovided with a guide-way or die, a cutter extending crosswise of theguide-way or die in one direction, and a carrier for the cutteradjustable in a rectilinear direction relatively to opposite sides ofthe guide-way or die in a direction at a right angle to the direction ofthe cutter, and in a curvilinear direction about an axis located outsideof the guide-way or die and extending between the planes of the sides ofthe guide-way or die, substantially as and for the purpose set forth.

4. In a machine of the class described and in combination, a frameformed with a guide-way or die, a knife extending crosswise of theguide-way or die in one direction, and a carrier for the knifecomprising a head adjustable in a direction crosswise of the guide-wayin a direction at an angle to the direction of the knife, and a secondhead movably mounted on the first head, substantially as and for thepurpose described.

5. In a machine of the class described and in combination, a frameprovided with a guide-way or die, a knife extending crosswise of theguide-way or die in one direction, and a carrier for the knifecomprising a head adjustable cross-wise of the guideway or die in adirection at a right angle to the direction of the knife, and a secondhead journaled in the first-mentioned head and arranged with its axislocated outside of and extending substantially parallel to the guidewayor die, substantially as and for the purpose specified.

6. In a machine of the class described and in combination, a frameprovided with a guide-way or die, a knife extending crosswise of theguide-way or die in one direction, a carrier for the knife comprising ahead slidably mounted on the frame and movable along the frame crosswiseof the guide-way or die in a direction at a right angle to the directionof the knife, and a second head rotatably mounted on the firstmentionedhead and arranged with its axis extending substantially parallel to theguideway or die, means for clamping the rotatable head to the slidablehead, and means for shifting the slidable head, substantially as and forthe purpose set forth.

7. In a machine of the class described and in combination, a frameprovided with a guide-way or'die, a knlfe extending crosswise of thegulde-way or die 1n one direction, a carrier for the knife, said carriercomprising a head slidably mounted on the frame and movable in adirection crosswise of the guide-way or die in a direction at a rightangle to the direction of the knife. said head being formed with abearing located outside of the guide-way or die and extendingsubstantially parallel thereto, and a second head having a trunnionjournaled in said'bearing, an arcuate slot concentric with the axis ofthe bearing, and a diametrically extending channel way opening throughits rear face and extending in the direction of the knife, a boltextending through the slot and into the first head, means in the channelway for engaging the shank of the knife, and means for shifting thefirst-mentioned head, substantially as and for the purpose described.

8. In a machine of the class described and in combination, a frameformed with a guide-way or die having a portion of one of its side wallsmovable laterally, a spring for resisting such lateral movement, a knifeextending crosswise of the guide-way or die and located near theyielding portion of the side wall, and a carrier for the knife,substantially as and for the purpose specified.

9. In a machine of the class described and in combination, a frameformed with a guide-way or die having a portion of one of its side wallsmovable laterally, a spring for resisting such lateral movement, a knifeex tending crosswise of the guide-way and located near the yieldingportion of said wall, and a carrier for the knife adjustable in arectilinear direction at a right angle to the direction of the knife andin curvilinear direction about an axis extending parallel to theguide-way or die, substantially as and for the purpose set forth.

10. In a machine of the class described and in combination, a frameprovided with a guide-way or die, and including side bars and a crossbar having forwardly extending lugs, a feed screw journaled in the lugs,a knife, and a carrier for the knife including a head slidably mountedon said cross bar and having a threaded engagement with said screw,substantially as and for the purpose set forth.

11. In a machine of the class described and in combination, a frameprovided with a guide-way or die and including side bars and a cross barhaving forwardly extending lugs, a feed screw journaled in the lugs, aknife, and a carrier for the knife including a head slidably mounted onsaid cross bar and having a threaded engagement with said screw, and asecond head journaled in the first-named head and provided with anopening for the reception of said knife, and with means for clamping theknife in position, substantially as and for the purpose described.

12. In a machine of the class described and in con'ibination, a frameprovided with a guide-way or die, a knife having a shank snbstai'itiallyrectangular in cross section, a channel bar having its channel designedto receive said shank, said channel being of less depth than the widthof the shank, a carrier comprising a rear head, and a front head mountedon the rear head and having a channel extending diametrically throughthe same and opening out through the rear face thereof, for thereception of said channel bar, and means for forcing the channel barrearwardly whereby the shank of the knife is clamped between the face ofthe first-named head and the bottom of channel in the channel bar,substantially as and for the purpose specified.

13. In a machine of the class described and in combination, a frameprovided with a guide-way or die, a knife having a shank substantiallyrectangi'ilar in cross-section, a channel bar having a channel thereinfor the reception of said shank, said channel being of less depth thanthe width of the shank, a carrier comprising a rear head and a fronthead mounted on the rear head and having a channel extendingdiametrically through the same and opening out through the rear facethereof, for the reception of said channel bar, andv means for forcingthe channel bar rearwardly, said means including a screw threaded in thefront head and at its end engaging the face of the channel bar.sul'istantially as and for the purpose set forth.

14-. In a machine of the class described and in combination, a framecon'iprising a base and side bars or standards, a cross bar secured tothe standards and provided at opposite ends with lugs, a feed screwmounted in said. lugs, cross bars extending between the said side barsand providing a guide-way between their opposing faces, a plate or shoelocated between the last-nznned bars and having a clamping face opposedto the inner face of one of said side bars, a knife, and a carriertherefor comprising a head slidably mounted on the first-named crossbar, and having an engagement with said screw, and a second headrotatably mounted on the first-named head and having a channel openingout against the face of the first-named head, and means for clamping theshank of the knife in said channel with the rear edge of the shank incontact with the front face of the first-named head, substantially asand for the purpose described.

15. In a machine of the class described and in combination, a framecomprising a base, and side bars or standards, cross bars extendingbetween said. standards, one of the same being adjustable toward andfrom the other, a shoe or plate loosely mounted between said cross barsand having a face designed to cooperate with the inner face of one ofthe standards, a spring coacting with one face of the plate for forcingthe same toward said standard, a knife, and a carrier therefor,substantially as and for the purpose specified.

16. In a machine of the class described and in combination, a framecou'iprising a base, and side bars or standards, cross bars extendingbetween said standards, one of the same being adjustable toward and fromthe other, a shoe or plate loosely mounted between sa id cross bars andhaving a face designed to cooperate with the inner face of one of thestandards, a spring coacting with the opposite face of the plate, saidspring comprising a flat plate, adjustable means for supporting the rearend of said spring and adjustable means coacting with. the intermediateportion of the spring for varying the tension thereof, substantially asand for the purpose set forth.

17. In a machine of the class described and in combination, a framecomprising a base, and side bars or standards, cross bars extendingbetween said standards, one of the same being adjustable toward and fromthe other, a shoe or plate loosely mounted between said cross bars andhaving a face designed to cooperate with the inner face of one of thestandards and provided with lugs cooperating with the cross bars toprevent said plate being withdrawn from between said bars, substantiallyas and for the purpose described.

In testimony whereof, I have hereunto signed my name in the presence oftwo attesting witnesses, at Palmyra, in the county of Wayne, in theState of New York, this 18th day of June, 1910.

OSCAR W. TRUli IBULL.

IVitnesscs d. I). LovnLAND, DAVID M. Ussnnn.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

